Welcome to OStack Knowledge Sharing Community for programmer and developer-Open, Learning and Share
Welcome To Ask or Share your Answers For Others

Categories

0 votes
229 views
in Technique[技术] by (71.8m points)

android - Grid Layout Vs. Table Layout

I am working on a booking engine android app like an airline booking system. To fetch the content of say all the available airlines specific to a passenger search, this is then displayed on the mobile's screen.

Which one, a table layout or a grid layout, will be effective considering screen loading time, system memory consumption, and additional features?

See Question&Answers more detail:os

与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…
Welcome To Ask or Share your Answers For Others

1 Answer

0 votes
by (71.8m points)

**EDIT: This line was correct when this answer was written, but no longer applies to 99.9%+ of all Android devices: There is no GridLayout in the Android API. **

(Note: As of API level 14, there finally is GridLayout; see the answers below. In addition, the V7 support library adds GridLayout support down to API 7. However, this answer's description of GridView is still accurate and very well stated.)

If you mean GridView, TableLayout and GridView are completely different things.

A GridView is basically like a ListView but whose items are arranged in a strict grid. It is attached to an Adapter, and retrieves views from the Adapter has the user scrolls through it. All elements in the grid must be the same size. The user can move a visible selector through each item -- the goal of a GridLayout is to display the data from an Adapter and let the user navigate and select each of the displayed items. The only difference from a ListView is that the items are put in a grid instead of in a vertical list.

TableLayout is just a layout manager, somewhat like a table in HTML. It does not itself do any scrolling; to have something that scrolls you must put the TableLayout in a ScrollView. This implies that all of the data you are displaying must be populated into the TableLayout up-front, so the ScrollView knows the total space it is to scroll in. It also does not directly give you per-"item" selection or interaction, because a TableLayout doesn't have items, it is just a layout manager.

You didn't actually give near enough useful information about what you are actually trying to do for anyone to recommend what to use. It depends a lot on what specifically you want.

I mean what will be useful in terms of "additional features"?!? Well what features are you looking for!

Anyway as a general rule, an Adapter-based view should be used for any situation where you have a significant amount of data that the user is scrolling view; these are a lot more efficient than having to create the entire view hierarchy up-front to display your data. They are also the only ones that automatically provide per-item selection and other such features. The primary view for this that applications use is ListView, though GridView can also be used.


与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…
Welcome to OStack Knowledge Sharing Community for programmer and developer-Open, Learning and Share
Click Here to Ask a Question

...